Rabbit Hole Cavehill Cask Strength Commemorative Edition is a single barrel release that reveals the alchemy of the liquid and the barrel to create this distinct Kentucky Straight Bourbon Whiskey. This Bourbon is bottled at 104.28 proof and consists of 70% corn, 10% malted wheat, 10% malted barley, 10% honey malted barley and NEVER chill-filtered. As it SHOULD be.